source3/libads/ldap_schema.c

   1 /*
   2    Unix SMB/CIFS implementation.
   3    ads (active directory) utility library
   4    Copyright (C) Guenther Deschner 2005-2007
   5    Copyright (C) Gerald (Jerry) Carter 2006
   6
   7    This program is free software; you can redistribute it and/or modify
   8    it under the terms of the GNU General Public License as published by
   9    the Free Software Foundation; either version 3 of the License, or
  10    (at your option) any later version.
  11
  12    This program is distributed in the hope that it will be useful,
  13    but WITHOUT ANY WARRANTY; without even the implied warranty of
  14    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15    GNU General Public License for more details.
  16
  17    You should have received a copy of the GNU General Public License
  18    along with this program.  If not, see <http://www.gnu.org/licenses/>.
  19 */
  20
  21 #include "includes.h"
  22 #include "ads.h"
  23 #include "libads/ldap_schema.h"
  24
  25 #ifdef HAVE_LDAP
  26
  27 ADS_STATUS ads_get_attrnames_by_oids(ADS_STRUCT *ads, TALLOC_CTX *mem_ctx,
  28                                      const char *schema_path,
  29                                      const char **OIDs, size_t num_OIDs,
  30                                      char ***OIDs_out, char ***names, size_t *count)
  31 {
  32         ADS_STATUS status;
  33         LDAPMessage *res = NULL;
  34         LDAPMessage *msg;
  35         char *expr = NULL;
  36         const char *attrs[] = { "lDAPDisplayName", "attributeId", NULL };
  37         int i = 0, p = 0;
  38
  39         if (!ads || !mem_ctx || !names || !count || !OIDs || !OIDs_out) {
  40                 return ADS_ERROR(LDAP_PARAM_ERROR);
  41         }
  42
  43         if (num_OIDs == 0 || OIDs[0] == NULL) {
  44                 return ADS_ERROR_NT(NT_STATUS_NONE_MAPPED);
  45         }
  46
  47         if ((expr = talloc_asprintf(mem_ctx, "(|")) == NULL) {
  48                 return ADS_ERROR(LDAP_NO_MEMORY);
  49         }
  50
  51         for (i=0; i<num_OIDs; i++) {
  52
  53                 if ((expr = talloc_asprintf_append_buffer(expr, "(attributeId=%s)",
  54                                                    OIDs[i])) == NULL) {
  55                         return ADS_ERROR(LDAP_NO_MEMORY);
  56                 }
  57         }
  58
  59         if ((expr = talloc_asprintf_append_buffer(expr, ")")) == NULL) {
  60                 return ADS_ERROR(LDAP_NO_MEMORY);
  61         }
  62
  63         status = ads_do_search_retry(ads, schema_path,
  64                                      LDAP_SCOPE_SUBTREE, expr, attrs, &res);
  65         if (!ADS_ERR_OK(status)) {
  66                 return status;
  67         }
  68
  69         *count = ads_count_replies(ads, res);
  70         if (*count == 0 || !res) {
  71                 status = ADS_ERROR_NT(NT_STATUS_NONE_MAPPED);
  72                 goto out;
  73         }
  74
  75         if (((*names) = TALLOC_ARRAY(mem_ctx, char *, *count)) == NULL) {
  76                 status = ADS_ERROR(LDAP_NO_MEMORY);
  77                 goto out;
  78         }
  79         if (((*OIDs_out) = TALLOC_ARRAY(mem_ctx, char *, *count)) == NULL) {
  80                 status = ADS_ERROR(LDAP_NO_MEMORY);
  81                 goto out;
  82         }
  83
  84         for (msg = ads_first_entry(ads, res); msg != NULL;
  85              msg = ads_next_entry(ads, msg)) {
  86
  87                 (*names)[p]     = ads_pull_string(ads, mem_ctx, msg,
  88                                                   "lDAPDisplayName");
  89                 (*OIDs_out)[p]  = ads_pull_string(ads, mem_ctx, msg,
  90                                                   "attributeId");
  91                 if (((*names)[p] == NULL) || ((*OIDs_out)[p] == NULL)) {
  92                         status = ADS_ERROR(LDAP_NO_MEMORY);
  93                         goto out;
  94                 }
  95
  96                 p++;
  97         }
  98
  99         if (*count < num_OIDs) {
 100                 status = ADS_ERROR_NT(STATUS_SOME_UNMAPPED);
 101                 goto out;
 102         }
 103
 104         status = ADS_ERROR(LDAP_SUCCESS);
 105 out:
 106         ads_msgfree(ads, res);
 107
 108         return status;
 109 }
 110
 111 const char *ads_get_attrname_by_guid(ADS_STRUCT *ads,
 112                                      const char *schema_path,
 113                                      TALLOC_CTX *mem_ctx,
 114                                      const struct GUID *schema_guid)
 115 {
 116         ADS_STATUS rc;
 117         LDAPMessage *res = NULL;
 118         char *expr = NULL;
 119         const char *attrs[] = { "lDAPDisplayName", NULL };
 120         const char *result = NULL;
 121         char *guid_bin = NULL;
 122
 123         if (!ads || !mem_ctx || !schema_guid) {
 124                 goto done;
 125         }
 126
 127         guid_bin = guid_binstring(mem_ctx, schema_guid);
 128         if (!guid_bin) {
 129                 goto done;
 130         }
 131
 132         expr = talloc_asprintf(mem_ctx, "(schemaIDGUID=%s)", guid_bin);
 133         if (!expr) {
 134                 goto done;
 135         }
 136
 137         rc = ads_do_search_retry(ads, schema_path, LDAP_SCOPE_SUBTREE,
 138                                  expr, attrs, &res);
 139         if (!ADS_ERR_OK(rc)) {
 140                 goto done;
 141         }
 142
 143         if (ads_count_replies(ads, res) != 1) {
 144                 goto done;
 145         }
 146
 147         result = ads_pull_string(ads, mem_ctx, res, "lDAPDisplayName");
 148
 149  done:
 150         TALLOC_FREE(guid_bin);
 151         ads_msgfree(ads, res);
 152         return result;
 153
 154 }
 155
 156 const char *ads_get_attrname_by_oid(ADS_STRUCT *ads, const char *schema_path, TALLOC_CTX *mem_ctx, const char * OID)
 157 {
 158         ADS_STATUS rc;
 159         int count = 0;
 160         LDAPMessage *res = NULL;
 161         char *expr = NULL;
 162         const char *attrs[] = { "lDAPDisplayName", NULL };
 163         char *result;
 164
 165         if (ads == NULL || mem_ctx == NULL || OID == NULL) {
 166                 goto failed;
 167         }
 168
 169         expr = talloc_asprintf(mem_ctx, "(attributeId=%s)", OID);
 170         if (expr == NULL) {
 171                 goto failed;
 172         }
 173
 174         rc = ads_do_search_retry(ads, schema_path, LDAP_SCOPE_SUBTREE,
 175                 expr, attrs, &res);
 176         if (!ADS_ERR_OK(rc)) {
 177                 goto failed;
 178         }
 179
 180         count = ads_count_replies(ads, res);
 181         if (count == 0 || !res) {
 182                 goto failed;
 183         }
 184
 185         result = ads_pull_string(ads, mem_ctx, res, "lDAPDisplayName");
 186         ads_msgfree(ads, res);
 187
 188         return result;
 189
 190 failed:
 191         DEBUG(0,("ads_get_attrname_by_oid: failed to retrieve name for oid: %s\n",
 192                 OID));
 193
 194         ads_msgfree(ads, res);
 195         return NULL;
 196 }
 197 /*********************************************************************
 198 *********************************************************************/
 199
 200 ADS_STATUS ads_schema_path(ADS_STRUCT *ads, TALLOC_CTX *mem_ctx, char **schema_path)
 201 {
 202         ADS_STATUS status;
 203         LDAPMessage *res;
 204         const char *schema;
 205         const char *attrs[] = { "schemaNamingContext", NULL };
 206
 207         status = ads_do_search(ads, "", LDAP_SCOPE_BASE, "(objectclass=*)", attrs, &res);
 208         if (!ADS_ERR_OK(status)) {
 209                 return status;
 210         }
 211
 212         if ( (schema = ads_pull_string(ads, mem_ctx, res, "schemaNamingContext")) == NULL ) {
 213                 ads_msgfree(ads, res);
 214                 return ADS_ERROR(LDAP_NO_RESULTS_RETURNED);
 215         }
 216
 217         if ( (*schema_path = talloc_strdup(mem_ctx, schema)) == NULL ) {
 218                 ads_msgfree(ads, res);
 219                 return ADS_ERROR(LDAP_NO_MEMORY);
 220         }
 221
 222         ads_msgfree(ads, res);
 223
 224         return status;
 225 }
 226
 227 /**
 228  * Check for "Services for Unix" or rfc2307 Schema and load some attributes into the ADS_STRUCT
 229  * @param ads connection to ads server
 230  * @param enum mapping type
 231  * @return ADS_STATUS status of search (False if one or more attributes couldn't be
 232  * found in Active Directory)
 233  **/
 234 ADS_STATUS ads_check_posix_schema_mapping(TALLOC_CTX *mem_ctx,
 235                                           ADS_STRUCT *ads,
 236                                           enum wb_posix_mapping map_type,
 237                                           struct posix_schema **s )
 238 {
 239         TALLOC_CTX *ctx = NULL;
 240         ADS_STATUS status;
 241         char **oids_out, **names_out;
 242         size_t num_names;
 243         char *schema_path = NULL;
 244         int i;
 245         struct posix_schema *schema = NULL;
 246
 247         const char *oids_sfu[] = {      ADS_ATTR_SFU_UIDNUMBER_OID,
 248                                         ADS_ATTR_SFU_GIDNUMBER_OID,
 249                                         ADS_ATTR_SFU_HOMEDIR_OID,
 250                                         ADS_ATTR_SFU_SHELL_OID,
 251                                         ADS_ATTR_SFU_GECOS_OID,
 252                                         ADS_ATTR_SFU_UID_OID };
 253
 254         const char *oids_sfu20[] = {    ADS_ATTR_SFU20_UIDNUMBER_OID,
 255                                         ADS_ATTR_SFU20_GIDNUMBER_OID,
 256                                         ADS_ATTR_SFU20_HOMEDIR_OID,
 257                                         ADS_ATTR_SFU20_SHELL_OID,
 258                                         ADS_ATTR_SFU20_GECOS_OID,
 259                                         ADS_ATTR_SFU20_UID_OID };
 260
 261         const char *oids_rfc2307[] = {  ADS_ATTR_RFC2307_UIDNUMBER_OID,
 262                                         ADS_ATTR_RFC2307_GIDNUMBER_OID,
 263                                         ADS_ATTR_RFC2307_HOMEDIR_OID,
 264                                         ADS_ATTR_RFC2307_SHELL_OID,
 265                                         ADS_ATTR_RFC2307_GECOS_OID,
 266                                         ADS_ATTR_RFC2307_UID_OID };
 267
 268         DEBUG(10,("ads_check_posix_schema_mapping for schema mode: %d\n", map_type));
 269
 270         switch (map_type) {
 271
 272                 case WB_POSIX_MAP_TEMPLATE:
 273                 case WB_POSIX_MAP_UNIXINFO:
 274                         DEBUG(10,("ads_check_posix_schema_mapping: nothing to do\n"));
 275                         return ADS_ERROR(LDAP_SUCCESS);
 276
 277                 case WB_POSIX_MAP_SFU:
 278                 case WB_POSIX_MAP_SFU20:
 279                 case WB_POSIX_MAP_RFC2307:
 280                         break;
 281
 282                 default:
 283                         DEBUG(0,("ads_check_posix_schema_mapping: "
 284                                  "unknown enum %d\n", map_type));
 285                         return ADS_ERROR(LDAP_PARAM_ERROR);
 286         }
 287
 288         if ( (ctx = talloc_init("ads_check_posix_schema_mapping")) == NULL ) {
 289                 return ADS_ERROR(LDAP_NO_MEMORY);
 290         }
 291
 292         if ( (schema = TALLOC_P(mem_ctx, struct posix_schema)) == NULL ) {
 293                 TALLOC_FREE( ctx );
 294                 return ADS_ERROR(LDAP_NO_MEMORY);
 295         }
 296
 297         status = ads_schema_path(ads, ctx, &schema_path);
 298         if (!ADS_ERR_OK(status)) {
 299                 DEBUG(3,("ads_check_posix_mapping: Unable to retrieve schema DN!\n"));
 300                 goto done;
 301         }
 302
 303         switch (map_type) {
 304                 case WB_POSIX_MAP_SFU:
 305                         status = ads_get_attrnames_by_oids(ads, ctx, schema_path, oids_sfu,
 306                                                            ARRAY_SIZE(oids_sfu),
 307                                                            &oids_out, &names_out, &num_names);
 308                         break;
 309                 case WB_POSIX_MAP_SFU20:
 310                         status = ads_get_attrnames_by_oids(ads, ctx, schema_path, oids_sfu20,
 311                                                            ARRAY_SIZE(oids_sfu20),
 312                                                            &oids_out, &names_out, &num_names);
 313                         break;
 314                 case WB_POSIX_MAP_RFC2307:
 315                         status = ads_get_attrnames_by_oids(ads, ctx, schema_path, oids_rfc2307,
 316                                                            ARRAY_SIZE(oids_rfc2307),
 317                                                            &oids_out, &names_out, &num_names);
 318                         break;
 319                 default:
 320                         status = ADS_ERROR_NT(NT_STATUS_INVALID_PARAMETER);
 321                         break;
 322         }
 323
 324         if (!ADS_ERR_OK(status)) {
 325                 DEBUG(3,("ads_check_posix_schema_mapping: failed %s\n",
 326                         ads_errstr(status)));
 327                 goto done;
 328         }
 329
 330         for (i=0; i<num_names; i++) {
 331
 332                 DEBUGADD(10,("\tOID %s has name: %s\n", oids_out[i], names_out[i]));
 333
 334                 if (strequal(ADS_ATTR_RFC2307_UIDNUMBER_OID, oids_out[i]) ||
 335                     strequal(ADS_ATTR_SFU_UIDNUMBER_OID, oids_out[i]) ||
 336                     strequal(ADS_ATTR_SFU20_UIDNUMBER_OID, oids_out[i])) {
 337                         schema->posix_uidnumber_attr = talloc_strdup(schema, names_out[i]);
 338                         continue;
 339                 }
 340
 341                 if (strequal(ADS_ATTR_RFC2307_GIDNUMBER_OID, oids_out[i]) ||
 342                     strequal(ADS_ATTR_SFU_GIDNUMBER_OID, oids_out[i]) ||
 343                     strequal(ADS_ATTR_SFU20_GIDNUMBER_OID, oids_out[i])) {
 344                         schema->posix_gidnumber_attr = talloc_strdup(schema, names_out[i]);
 345                         continue;
 346                 }
 347
 348                 if (strequal(ADS_ATTR_RFC2307_HOMEDIR_OID, oids_out[i]) ||
 349                     strequal(ADS_ATTR_SFU_HOMEDIR_OID, oids_out[i]) ||
 350                     strequal(ADS_ATTR_SFU20_HOMEDIR_OID, oids_out[i])) {
 351                         schema->posix_homedir_attr = talloc_strdup(schema, names_out[i]);
 352                         continue;
 353                 }
 354
 355                 if (strequal(ADS_ATTR_RFC2307_SHELL_OID, oids_out[i]) ||
 356                     strequal(ADS_ATTR_SFU_SHELL_OID, oids_out[i]) ||
 357                     strequal(ADS_ATTR_SFU20_SHELL_OID, oids_out[i])) {
 358                         schema->posix_shell_attr = talloc_strdup(schema, names_out[i]);
 359                         continue;
 360                 }
 361
 362                 if (strequal(ADS_ATTR_RFC2307_GECOS_OID, oids_out[i]) ||
 363                     strequal(ADS_ATTR_SFU_GECOS_OID, oids_out[i]) ||
 364                     strequal(ADS_ATTR_SFU20_GECOS_OID, oids_out[i])) {
 365                         schema->posix_gecos_attr = talloc_strdup(schema, names_out[i]);
 366                 }
 367
 368                 if (strequal(ADS_ATTR_RFC2307_UID_OID, oids_out[i]) ||
 369                     strequal(ADS_ATTR_SFU_UID_OID, oids_out[i]) ||
 370                     strequal(ADS_ATTR_SFU20_UID_OID, oids_out[i])) {
 371                         schema->posix_uid_attr = talloc_strdup(schema, names_out[i]);
 372                 }
 373         }
 374
 375         if (!schema->posix_uidnumber_attr ||
 376             !schema->posix_gidnumber_attr ||
 377             !schema->posix_homedir_attr ||
 378             !schema->posix_shell_attr ||
 379             !schema->posix_gecos_attr) {
 380                 status = ADS_ERROR(LDAP_NO_MEMORY);
 381                 TALLOC_FREE( schema );
 382                 goto done;
 383         }
 384
 385         *s = schema;
 386
 387         status = ADS_ERROR(LDAP_SUCCESS);
 388
 389 done:
 390         TALLOC_FREE(ctx);
 391
 392         return status;
 393 }
 394
 395 #endif